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st: RE: RE: Transform source table to edgelist (or nodelist)
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
st: RE: RE: Transform source table to edgelist (or nodelist)
Date
Mon, 20 Feb 2012 12:25:00 +0000
Sorry, no; that's a different problem.
Nick
[email protected]
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Nick Cox
Sent: 20 February 2012 10:54
To: '[email protected]'
Subject: st: RE: Transform source table to edgelist (or nodelist)
This looks like an FAQ
http://www.stata.com/support/faqs/data/pairs.html
although I suspect there is a less clumsy way to approach it.
Nick
[email protected]
Steve Sauerwald
I have a source table that contains manager/firm information. A
manager can work for M companies and a company can have N managers.
For instance, the following table shows 2 firms (FID 1 and 2) and four
managers (MID A, B, C, and D).
FID MID
1 A
1 B
1 C
2 A
2 B
2 D
Now, I'd like to create the interlocking relationships between managers. If
two managers work together in the same firm (or in more than one
firm), this would indicate a "1." If not, a "0." The end result should
be an adjacency matrix but I'd be happy to get to an edgelist first
such as the following:
MID1 MID2 CONNECT
A B 1
A C 1
A D 1
B C 1
B D 1
C D 0
Based on the information in the source table, manager C and manager D
are not connected in either firm 1 or 2, hence the 0. My actual source
table contains quite a few records so it would be great to automate
this process. Does anyone have an idea of how to implement this in
Stata?
Alternatively, the UCLA Stata website
(http://www.ats.ucla.edu/stat/stata/code/adj_matrix.htm) shows some
code to transform a nodelist into an adjacency matrix (If someone
knows a way to transform my source table into a nodelist, that'd be
also a great help).
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